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B. BASKET (TUMBLER)
The basket (tumbler) is made of 14-gauge stainless steel perforated panels, five (5) stainless steel ribs, and two
(2) basket (tumbler) rings. The basket (tumbler) ribs are welded at each end to the basket (tumbler) rings. The
perforated panels are bolted to the ribs so that they can be removed for cleaning or replaced.
C. BLOWER SYSTEM
The impellor (fan) used in the AD-670 dryer is a 22” (55.88 cm) diameter backwardly inclined plug fan. It spins
in a counterclockwise (CCW) direction looking from the left side of the dryer.
The impellor (fan) shaft is mounted in two (2) pillow block bearings, and the shaft is driven by two (2)
B-section V-belts connected to the 25 HP (18.64 kw) blower motor.
The blower motor is mounted on an adjustable base. The motor position can be easily adjusted so that proper
tension can be maintained on the V-belts.
D. AIR JET SYSTEM
The Air Jet System is activated at the end of a drying cycle to clean lint accumulation off of the blower (impellor/
fan).
E. SAFETY DEVICES
1. Load/Unload Door Switches
There are two (2) of these switches located below and to the right of the main load and/or unload doors.
These switches ensure that the doors are closed before the dryer can start and ensures that the doors are
fully open before the dryer will tilt. If the dryer is started when the load doors are open, the microprocessor
controller (computer) light emitting diode (L.E.D.) display will show “door.”
2. Lint Basket Switch
This switch ensures that the lint basket is closed before the dryer can start. This switch is located at the
front of the dryer at the top right side of the lint basket. If the lint basket is open when the dryer is started,
the microprocessor controller (computer) L.E.D. display will show “lint door open.”
3. Basket (Tumbler) Hi-Limit Safety Thermostat
This disc temperature switch has a setting of 225º F (107º C). It is located below the basket (tumbler) on
the temperature sensor bracket, along side the microprocessor controller (computer) sensor, and is an
automatic reset type switch. Access to this switch is gained by sliding/pulling the lint basket completely
out of the dryer.
This switch backs up the microprocessor controller (computer) sensor and in case of a microprocessor
controller (computer) malfunction will prevent the basket’s (tumbler’s) temperature from becoming
excessive. If this switch trips, the gas flow to the burner boxes will be shut down; however, the Phase 7
microprocessor controller (computer) will display “exhaust high temp fault.”